any 12v sla would work the 12ah is just how long it runs on a charge. I would suggest a schumacher charger from Lowes. Theyre about 20 and its a 1.5 a charger. I wouldn't go over 2amps for a charger. High amp chargers can boil the battery.

Both will charge a 6 or 12 volt. The first one comes with the "proper" connectors to charge peg or power wheels, and also allows you to use ANY KIND OF ADAPTER to charge any other kind of 6 or 12V batteries, be it in a car, boat, tractor, sump pump, solar system, ANYTHING!They are 6 OR 12 volt automatically switches, and push at up to 3 amp, to charge quicker than stock chargers, without cooking the battery. You can connect it today, and come back next year, and all is fine.Some day you will be getting the 6v to boost the speed to 18v. Getting either or both will accomplish what you need for the toy, and then some.I believe he meant about $20!

Ya, maybe you'd see some negligible amount of life expectancy increase, but that would be minimal, compared to the increase of drive time due to the quicker charge, I doubt it would even be worth it.I haven't been playing with power wheels for long, but I believe people on average get about 3 years from the batteries, so it's not like they're a 10 year investment anyway. 6 of one, half dozen of the other.